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Part A A window washer pushes his scrub brush up a vertical window at constant speed as shown in the figure (Figure Calculate the magnitude of the force F exerted on the head of the brush by the handle of the brush; the 1). The head of the brush (when wet) weighs 14.1 N and direction of the force F is as shown in the figure. the coefficient of kinetic friction between the bristles and the window surface is 0.100. IVO AE BEER ? F = N Submit Request Answer Figure Part B Calculate the magnitude of the normal force exerted on the brush by the window. IVO O O ? N = N 53,10 Submit Request